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- Newsgroups: comp.protocols.time.ntp
- Path: sparky!uunet!wupost!darwin.sura.net!mips!sgi!rhyolite!vjs
- From: vjs@rhyolite.wpd.sgi.com (Vernon Schryver)
- Subject: Re: Reducing distribution clutter
- Message-ID: <olnq05g@rhyolite.wpd.sgi.com>
- Organization: Silicon Graphics, Inc. Mountain View, CA
- References: <9208161609.aa21356@huey.udel.edu>
- Distribution: inet
- Date: Mon, 17 Aug 1992 00:51:11 GMT
- Lines: 28
-
- In article <9208161609.aa21356@huey.udel.edu>, Mills@UDEL.EDU writes:
- > ...
- > ...Use this with GPS receivers
- > and FDDI media.
-
- Why?
-
- I doubt TCP/IP and UDP/IP over FDDI have any more stable, symmetric, or
- otherwise desirable propagation delays than over ethernet.
-
- My full babble includes "proofs" that an unloaded ethernet is more
- consistent that an unloaded FDDI ring, that under overload an FDDI ring
- is every bit as bad as ethernet although FDDI collapses in different
- ways, and that the physical propagation delay around a typical FDDI
- ring is both roughly comparable to ethernet and does not matter with
- low and medium performance FDDI interfaces such as all of the FDDI
- hardware and software I have heard about on Suns.
-
- I'm not trying to attack Sun, but only represent what I've heard about
- other FDDI implementations. I think I'm being fair. My FDDI
- implemenations are significanty faster, and I don't think NTP over them
- would be better than NTP over reasonable ethernet.
-
- Has someone been peddling the old "token rings are better than CSMA/CD
- baloney"?
-
-
- Vernon Schryver, vjs@sgi.com
-